On May 5, 2013 The National collaborated with Icelandic artist Ragnar Kjartansson on A Lot of Sorrow, a durational performance presented as part of MoMA PS1's Sunday Sessions. Kjartansson invited The National to play their three-minute, twenty-five second song "Sorrow" live on stage, repeatedly and continuously, for six hours and the audio recording of the performance will be released as a limited edition 1,500 run vinyl boxed set by 4AD on June 22, 2015.

Featuring nine pieces of clear vinyl in clear sleeves held in a translucent, screen printed box, A Lot of Sorrow is now available for pre-order and will cost $150. All profits will be donated to Partners in Health, an organization dedicated to improving the health of impoverished people worldwide. To pre-order the album head to this site: http://www.alotofsorrow.com/